R rated sci-fi books

5467 books

Sci-fi books with mature content including explicit sex, graphic violence, or strong language. For adult readers.

The Manhattan Hunt Club
The Manhattan Hunt Club
John Saul
R
The Wolf Hunt
The Wolf Hunt
Gillian Bradshaw
R
Elske
Elske
Cynthia Voigt
R
Operation Sierra 75
Operation Sierra 75
Thomas S. Gressman
R
The Primal Hunter 14
The Primal Hunter 14
Zogarth
R
The Genesis Wave: Book Two
The Genesis Wave: Book Two
John Vornholt
R
The Changeling War
The Changeling War
Peter Garrison
R
The Forgotten War
The Forgotten War
William R. Forstchen
R
Vectors
Vectors
Kristine Kathryn Rusch; Dean Wesley Smith
R
While the Cat's Away
While the Cat's Away
Margot Batrae
R
Assignment: Eternity
Assignment: Eternity
Greg Cox
R
Audrey Rose
Audrey Rose
Frank De Felitta
R
Burndive
Burndive
Karin Lowachee
R
Dance with the Devil
Dance with the Devil
Sherrilyn Kenyon
R
Daggermouth
Daggermouth
H. M. Wolfe
R
Seeker
Seeker
Jack McDevitt
R
I, Strahd: The War Against Azalin
I, Strahd: The War Against Azalin
P. N. Elrod
R
In Awe
In Awe
Scott Heim
R
The Way of the Apprentice
The Way of the Apprentice
Jude Watson
R
The Dangerous Games
The Dangerous Games
Jude Watson
R
The General's President
The General's President
John Dalmas
R
The Rescue
The Rescue
Don Ellis (2000s)
R
Wild Splendor
Wild Splendor
Leta Tegler
R
A Bite to Remember
A Bite to Remember
Lynsay Sands
R
Swordhunt
Swordhunt
Diane Duane
R
Kitty Goes to Washington
Kitty Goes to Washington
Carrie Vaughn
R
Blackwing
Blackwing
Ed McDonald
R
Rising Sun
Rising Sun
Michael Shorten
R
Midnight Awakening
Midnight Awakening
Lara Adrian
R
Honey Bea
Honey Bea
Kim L. Siegelson
R